Please use this identifier to cite or link to this item:
Title: Feedforward control for reducing disk-flutter-induced track misregistration
Authors: Guo, G. 
Zhang, J. 
Keywords: Disk flutter
Hard disk drive
Multisensing servo
Servo control system
Vibration control
Issue Date: Jul-2003
Source: Guo, G., Zhang, J. (2003-07). Feedforward control for reducing disk-flutter-induced track misregistration. IEEE Transactions on Magnetics 39 (4 II) : 2103-2108. ScholarBank@NUS Repository.
Abstract: We show in this paper that the disk vertical vibration signal picked from the slider in a hard disk drive has a fairly good correlation to the track misregistration at the disk flutter frequencies. We propose to introduce a feedforward controller into the usual servo loop to reduce disk-flutter-induced track misregistration (TMR). The feedforward controller is an approximated differential element with the disk vertical direction velocity as input. In our experimental setup, we show that such a method can reduce the TMR induced by the first four disk flutter modes by an average of about 56%. The method can potentially be used in high-track-per-inch servo track writers to reduce the written-in repeatable runouts.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2003.814287
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Mar 6, 2018


checked on Jan 24, 2018

Page view(s)

checked on Mar 11, 2018

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.